Space charge dynamics in LDPE films immediately before breakdown

被引：40
|
作者：
Fukuma, M [1 ]
Fukunaga, K
Maeno, T
机构：
[1] Matsue Natl Coll Technol, Matsue, Shimane, Japan
[2] Commun Res Lab, Tokyo, Japan
来源：
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2001年 / 8卷 / 02期
关键词：
Intrinsic electrical breakdown - Pulsed electroacoustic method - Space charge dynamics;
D O I：
10.1109/94.919963
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Space charge dynamics in low-density polyethylene (LDPE) films were observed by the pulsed electroacoustic (PEA) method during breakdown tests at various temperatures. In order to investigate the intrinsic electrical breakdown, the applied electric field was increased to 300 kV/mm in 150 ms, and kept constant until breakdown of the specimens, or 300 ms at the longest. Space charge profiles were measured at 1 ms intervals. A significant positive charge propagating into the sample was observed only immediately before the breakdown at 90 degreesC. These measurements revealed that the positive charge behavior is strongly related to the breakdown phenomena.
引用
收藏
页码：304 / 306
页数：3
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